This was the first automatic machine gun to be developed. It is of the heavy type, recoil operated, water cooled, and belt fed. The gun is capable of sustained fire for long periods of time provided its water supply is properly maintained, and is adaptable to indirect barrage fire. It is used by the British and U. S. forces and in modified form by the Germans.
BROWNING AUTOMATIC RIFLE EQUIPMENT.
LEWIS AIRCRAFT MACHINE GUN, MODEL 1917, CALIBER .30.
MARLIN AIRCRAFT MACHINE GUN, TYPE 8 M. G.
A fixed synchronized gun developed from the Colt gun solely for aircraft use. It is of the heavy type, gas operated, air cooled, and belt fed. It is the only gas-operated gun which has been successfully synchronized and has been found to give the closest grouping of shot in synchronized fire which has ever been obtained with any gun.
GERMAN MAXIM MACHINE GUN ON MOUNT.